List of Top Free Open Source & Self Hosted Application for DNS

DNS servers and management tools.

blocky – Fast and lightweight DNS proxy (like Pi-hole) as ad-blocker for local network with many features. Apache-2.0 Go
CoreDNS – Plugin driven DNS Server with support for proxying to Google’s DNS-over-HTTPS. Apache-2.0 Go
Maza ad blocking – Local ad blocker. Like Pi-hole but local and using your operating system. Apache-2.0 Bash
nsupdate.info – Dynamic DNS service. BSD-3-Clause Python
SmartDNS – A local DNS server to obtain the fastest website IP for the best Internet experience, supports DoT, DoH. GPL-3.0 C
SPF Toolbox – Application to look up DNS records such as SPF, MX, Whois, and more. MIT PHP
Technitium DNS Server – An open source authoritative as well as recursive DNS server that can be used for self hosting a DNS server for privacy & security. GPL-3.0 Docker/C#

👤 About the Author

Ashwani is passionate about DevOps, DevSecOps, SRE, MLOps, and AiOps, with a strong drive to simplify and scale modern IT operations. Through continuous learning and sharing, Ashwani helps organizations and engineers adopt best practices for automation, security, reliability, and AI-driven operations.

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